public void SendIgnorableData(string msg) { SSH1DataWriter w = new SSH1DataWriter(); w.Write(msg); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_IGNORE, w.ToByteArray()); Transmit(p); }
public string DumpHostKeyInKnownHostsStyle() { StringBuilder bld = new StringBuilder(); bld.Append("ssh1 "); SSH1DataWriter wr = new SSH1DataWriter(); //RSA only for SSH1 RSAPublicKey rsa = (RSAPublicKey)_hostkey; wr.Write(rsa.Exponent); wr.Write(rsa.Modulus); byte[] tmpdata = Base64.Encode(wr.ToByteArray()); bld.Append(Encoding.UTF8.GetString(tmpdata, 0, tmpdata.Length)); return(bld.ToString()); }
//RSA authentication private void DoRSAChallengeResponse() { //read key SSH1UserAuthKey key = new SSH1UserAuthKey(_param.IdentityFile, _param.Password); SSH1DataWriter w = new SSH1DataWriter(); w.Write(key.PublicModulus); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_AUTH_RSA, w.ToByteArray()); p.WriteTo(_stream, _tCipher); p = ReceivePacket(); if (p.Type == PacketType.SSH_SMSG_FAILURE) { throw new Exception(Strings.GetString("ServerRefusedRSA")); } else if (p.Type != PacketType.SSH_SMSG_AUTH_RSA_CHALLENGE) { throw new Exception(String.Format(Strings.GetString("UnexpectedResponse"), p.Type)); } //creating challenge SSH1DataReader r = new SSH1DataReader(p.Data); BigInteger challenge = key.decryptChallenge(r.ReadMPInt()); byte[] rawchallenge = RSAUtil.StripPKCS1Pad(challenge, 2).getBytes(); //building response MemoryStream bos = new MemoryStream(); bos.Write(rawchallenge, 0, rawchallenge.Length); //!!mindtermでは頭が0かどうかで変なハンドリングがあった bos.Write(_sessionID, 0, _sessionID.Length); byte[] response = HashAlgorithmProvider.OpenAlgorithm(HashAlgorithmNames.Md5).HashData(bos.ToArray().AsBuffer()).ToArray();; w = new SSH1DataWriter(); w.Write(response); p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_AUTH_RSA_RESPONSE, w.ToByteArray()); p.WriteTo(_stream, _tCipher); }
/** * closes this channel */ public void Close() { if (_connection.IsClosed()) { return; } if (_type == ChannelType.Shell) { SSH1DataWriter wr2 = new SSH1DataWriter(); wr2.Write(_remoteID); SSH1Packet p2 = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_EOF, wr2.ToByteArray()); Transmit(p2); } SSH1DataWriter wr = new SSH1DataWriter(); wr.Write(_remoteID); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_CHANNEL_CLOSE, wr.ToByteArray()); Transmit(p); }
public void Disconnect(string msg) { if(_closed) return; SSH1DataWriter w = new SSH1DataWriter(); w.Write(msg); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_DISCONNECT, w.ToByteArray()); p.WriteTo(_stream, _tCipher); _stream.Flush(); _closed = true; _stream.Close(); }
/** * transmits channel data */ public void Transmit(byte[] data) { SSH1DataWriter wr = new SSH1DataWriter(); if (_type == ChannelType.Shell) { wr.WriteAsString(data); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_STDIN_DATA, wr.ToByteArray()); Transmit(p); } else { wr.Write(_remoteID); wr.WriteAsString(data); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_CHANNEL_DATA, wr.ToByteArray()); Transmit(p); } }
private void ProcessPortforwardingRequest(ISSHConnectionEventReceiver receiver, SSH1Packet packet) { SSH1DataReader reader = new SSH1DataReader(packet.Data); int server_channel = reader.ReadInt32(); byte[] tmpdata = reader.ReadString(); string host = Encoding.UTF8.GetString(tmpdata, 0, tmpdata.Length); int port = reader.ReadInt32(); SSH1DataWriter writer = new SSH1DataWriter(); PortForwardingCheckResult result = receiver.CheckPortForwardingRequest(host, port, "", 0); if (result.allowed) { int local_id = this.RegisterChannelEventReceiver(null, result.channel)._localID; _eventReceiver.EstablishPortforwarding(result.channel, new SSH1Channel(this, ChannelType.ForwardedRemoteToLocal, local_id, server_channel)); writer.Write(server_channel); writer.Write(local_id); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_CHANNEL_OPEN_CONFIRMATION, writer.ToByteArray()); p.WriteTo(_stream, _tCipher); } else { writer.Write(server_channel); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_CHANNEL_OPEN_FAILURE, writer.ToByteArray()); p.WriteTo(_stream, _tCipher); } }
public SSHChannel ForwardPort(ISSHChannelEventReceiver receiver, string remote_host, int remote_port, string originator_host, int originator_port) { if (_shellID == -1) { ExecShell(); _shellID = RegisterChannelEventReceiver(null, new SSH1DummyReceiver())._localID; } int local_id = this.RegisterChannelEventReceiver(null, receiver)._localID; SSH1DataWriter writer = new SSH1DataWriter(); writer.Write(local_id); //channel id is fixed to 0 writer.Write(remote_host); writer.Write(remote_port); //originator is specified only if SSH_PROTOFLAG_HOST_IN_FWD_OPEN is specified //writer.Write(originator_host); SSH1Packet SSH1Packet = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_PORT_OPEN, writer.ToByteArray()); SSH1Packet.WriteTo(_stream, _tCipher); return(new SSH1Channel(this, ChannelType.ForwardedLocalToRemote, local_id)); }
private void SendUserName(string username) { SSH1DataWriter writer = new SSH1DataWriter(); writer.Write(username); SSH1Packet SSH1Packet = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_USER, writer.ToByteArray()); SSH1Packet.WriteTo(_stream, _tCipher); }
private void SendRequestPTY() { SSH1DataWriter writer = new SSH1DataWriter(); writer.Write(_param.TerminalName); writer.Write(_param.TerminalHeight); writer.Write(_param.TerminalWidth); writer.Write(_param.TerminalPixelWidth); writer.Write(_param.TerminalPixelHeight); writer.Write(new byte[1]); //TTY_OP_END SSH1Packet SSH1Packet = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_REQUEST_PTY, writer.ToByteArray()); SSH1Packet.WriteTo(_stream, _tCipher); }
private void SendPlainPassword() { SSH1DataWriter writer = new SSH1DataWriter(); writer.Write(_param.Password); SSH1Packet SSH1Packet = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_AUTH_PASSWORD, writer.ToByteArray()); SSH1Packet.WriteTo(_stream, _tCipher); }
private void ProcessPortforwardingRequest(ISSHConnectionEventReceiver receiver, SSH1Packet packet) { SSH1DataReader reader = new SSH1DataReader(packet.Data); int server_channel = reader.ReadInt32(); byte[] tmpdata = reader.ReadString(); string host = Encoding.UTF8.GetString(tmpdata,0, tmpdata.Length); int port = reader.ReadInt32(); SSH1DataWriter writer = new SSH1DataWriter(); PortForwardingCheckResult result = receiver.CheckPortForwardingRequest(host, port, "", 0); if(result.allowed) { int local_id = this.RegisterChannelEventReceiver(null, result.channel)._localID; _eventReceiver.EstablishPortforwarding(result.channel, new SSH1Channel(this, ChannelType.ForwardedRemoteToLocal, local_id, server_channel)); writer.Write(server_channel); writer.Write(local_id); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_CHANNEL_OPEN_CONFIRMATION, writer.ToByteArray()); p.WriteTo(_stream, _tCipher); } else { writer.Write(server_channel); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_CHANNEL_OPEN_FAILURE, writer.ToByteArray()); p.WriteTo(_stream, _tCipher); } }
//RSA authentication private void DoRSAChallengeResponse() { //read key SSH1UserAuthKey key = new SSH1UserAuthKey(_param.IdentityFile, _param.Password); SSH1DataWriter w = new SSH1DataWriter(); w.Write(key.PublicModulus); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_AUTH_RSA, w.ToByteArray()); p.WriteTo(_stream, _tCipher); p = ReceivePacket(); if(p.Type==PacketType.SSH_SMSG_FAILURE) throw new Exception(Strings.GetString("ServerRefusedRSA")); else if(p.Type!=PacketType.SSH_SMSG_AUTH_RSA_CHALLENGE) throw new Exception(String.Format(Strings.GetString("UnexpectedResponse"), p.Type)); //creating challenge SSH1DataReader r = new SSH1DataReader(p.Data); BigInteger challenge = key.decryptChallenge(r.ReadMPInt()); byte[] rawchallenge = RSAUtil.StripPKCS1Pad(challenge, 2).getBytes(); //building response MemoryStream bos = new MemoryStream(); bos.Write(rawchallenge, 0, rawchallenge.Length); //!!mindterm�ł͓����O���ǂ����ŕςȃn���h�����O�������� bos.Write(_sessionID, 0, _sessionID.Length); byte[] response = HashAlgorithmProvider.OpenAlgorithm(HashAlgorithmNames.Md5).HashData(bos.ToArray().AsBuffer()).ToArray(); ; w = new SSH1DataWriter(); w.Write(response); p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_AUTH_RSA_RESPONSE, w.ToByteArray()); p.WriteTo(_stream, _tCipher); }
public void SendIgnorableData(string msg) { SSH1DataWriter w = new SSH1DataWriter(); w.Write(msg); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_IGNORE, w.ToByteArray()); Transmit(p); }
public void ListenForwardedPort(string allowed_host, int bind_port) { SSH1DataWriter writer = new SSH1DataWriter(); writer.Write(bind_port); writer.Write(allowed_host); writer.Write(0); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_PORT_FORWARD_REQUEST, writer.ToByteArray()); p.WriteTo(_stream, _tCipher); if(_shellID==-1) { ExecShell(); _shellID = RegisterChannelEventReceiver(null, new SSH1DummyReceiver())._localID; } }
public SSHChannel ForwardPort(ISSHChannelEventReceiver receiver, string remote_host, int remote_port, string originator_host, int originator_port) { if(_shellID==-1) { ExecShell(); _shellID = RegisterChannelEventReceiver(null, new SSH1DummyReceiver())._localID; } int local_id = this.RegisterChannelEventReceiver(null, receiver)._localID; SSH1DataWriter writer = new SSH1DataWriter(); writer.Write(local_id); //channel id is fixed to 0 writer.Write(remote_host); writer.Write(remote_port); //originator is specified only if SSH_PROTOFLAG_HOST_IN_FWD_OPEN is specified //writer.Write(originator_host); SSH1Packet SSH1Packet = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_PORT_OPEN, writer.ToByteArray()); SSH1Packet.WriteTo(_stream, _tCipher); return new SSH1Channel(this, ChannelType.ForwardedLocalToRemote, local_id); }
public void Disconnect(string msg) { if (_closed) { return; } SSH1DataWriter w = new SSH1DataWriter(); w.Write(msg); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_DISCONNECT, w.ToByteArray()); p.WriteTo(_stream, _tCipher); _stream.Flush(); _closed = true; _stream.Close(); }
private void SendSessionKey(byte[] session_key) { try { //step1 XOR with session_id byte[] working_data = new byte[session_key.Length]; byte[] session_id = CalcSessionID(); Array.Copy(session_key, 0, working_data, 0, session_key.Length); for(int i=0; i<session_id.Length; i++) working_data[i] ^= session_id[i]; //step2 decrypts with RSA RSAPublicKey first_encryption; RSAPublicKey second_encryption; SSHServerInfo si = _cInfo._serverinfo; int first_key_bytelen, second_key_bytelen; if(si.server_key_bits < si.host_key_bits) { first_encryption = new RSAPublicKey(si.server_key_public_exponent, si.server_key_public_modulus); second_encryption = new RSAPublicKey(si.host_key_public_exponent, si.host_key_public_modulus); first_key_bytelen = (si.server_key_bits+7)/8; second_key_bytelen = (si.host_key_bits+7)/8; } else { first_encryption = new RSAPublicKey(si.host_key_public_exponent, si.host_key_public_modulus); second_encryption = new RSAPublicKey(si.server_key_public_exponent, si.server_key_public_modulus); first_key_bytelen = (si.host_key_bits+7)/8; second_key_bytelen = (si.server_key_bits+7)/8; } BigInteger first_result = RSAUtil.PKCS1PadType2(new BigInteger(working_data), first_key_bytelen, _param.Random).modPow(first_encryption.Exponent, first_encryption.Modulus); BigInteger second_result = RSAUtil.PKCS1PadType2(first_result, second_key_bytelen, _param.Random).modPow(second_encryption.Exponent, second_encryption.Modulus); //output SSH1DataWriter writer = new SSH1DataWriter(); writer.Write((byte)_cInfo._algorithmForTransmittion); writer.Write(si.anti_spoofing_cookie); writer.Write(second_result); writer.Write(0); //protocol flags //send SSH1Packet SSH1Packet = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_SESSION_KEY, writer.ToByteArray()); SSH1Packet.WriteTo(_stream); _sessionID = session_id; } catch(Exception e) { if(e is IOException) throw (IOException)e; else { string t = e.StackTrace; throw new Exception(e.Message); //IOException�ȊO�݂͂�SSHException�ɂ��Ă��܂� } } }
private void SendSessionKey(byte[] session_key) { try { //step1 XOR with session_id byte[] working_data = new byte[session_key.Length]; byte[] session_id = CalcSessionID(); Array.Copy(session_key, 0, working_data, 0, session_key.Length); for (int i = 0; i < session_id.Length; i++) { working_data[i] ^= session_id[i]; } //step2 decrypts with RSA RSAPublicKey first_encryption; RSAPublicKey second_encryption; SSHServerInfo si = _cInfo._serverinfo; int first_key_bytelen, second_key_bytelen; if (si.server_key_bits < si.host_key_bits) { first_encryption = new RSAPublicKey(si.server_key_public_exponent, si.server_key_public_modulus); second_encryption = new RSAPublicKey(si.host_key_public_exponent, si.host_key_public_modulus); first_key_bytelen = (si.server_key_bits + 7) / 8; second_key_bytelen = (si.host_key_bits + 7) / 8; } else { first_encryption = new RSAPublicKey(si.host_key_public_exponent, si.host_key_public_modulus); second_encryption = new RSAPublicKey(si.server_key_public_exponent, si.server_key_public_modulus); first_key_bytelen = (si.host_key_bits + 7) / 8; second_key_bytelen = (si.server_key_bits + 7) / 8; } BigInteger first_result = RSAUtil.PKCS1PadType2(new BigInteger(working_data), first_key_bytelen, _param.Random).modPow(first_encryption.Exponent, first_encryption.Modulus); BigInteger second_result = RSAUtil.PKCS1PadType2(first_result, second_key_bytelen, _param.Random).modPow(second_encryption.Exponent, second_encryption.Modulus); //output SSH1DataWriter writer = new SSH1DataWriter(); writer.Write((byte)_cInfo._algorithmForTransmittion); writer.Write(si.anti_spoofing_cookie); writer.Write(second_result); writer.Write(0); //protocol flags //send SSH1Packet SSH1Packet = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_SESSION_KEY, writer.ToByteArray()); SSH1Packet.WriteTo(_stream); _sessionID = session_id; } catch (Exception e) { if (e is IOException) { throw (IOException)e; } else { string t = e.StackTrace; throw new Exception(e.Message); //IOException以外はみなSSHExceptionにしてしまう } } }
private void SendUserName(string username) { SSH1DataWriter writer = new SSH1DataWriter(); writer.Write(username); SSH1Packet SSH1Packet = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_USER, writer.ToByteArray()); SSH1Packet.WriteTo(_stream, _tCipher); }
private void SendPlainPassword() { SSH1DataWriter writer = new SSH1DataWriter(); writer.Write(_param.Password); SSH1Packet SSH1Packet = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_AUTH_PASSWORD, writer.ToByteArray()); SSH1Packet.WriteTo(_stream, _tCipher); }
/** * closes this channel */ public void Close() { if(_connection.IsClosed()) return; if(_type==ChannelType.Shell) { SSH1DataWriter wr2 = new SSH1DataWriter(); wr2.Write(_remoteID); SSH1Packet p2 = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_EOF, wr2.ToByteArray()); Transmit(p2); } SSH1DataWriter wr = new SSH1DataWriter(); wr.Write(_remoteID); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_CHANNEL_CLOSE, wr.ToByteArray()); Transmit(p); }
private void SendRequestPTY() { SSH1DataWriter writer = new SSH1DataWriter(); writer.Write(_param.TerminalName); writer.Write(_param.TerminalHeight); writer.Write(_param.TerminalWidth); writer.Write(_param.TerminalPixelWidth); writer.Write(_param.TerminalPixelHeight); writer.Write(new byte[1]); //TTY_OP_END SSH1Packet SSH1Packet = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_REQUEST_PTY, writer.ToByteArray()); SSH1Packet.WriteTo(_stream, _tCipher); }
/** * resizes the size of terminal */ public void ResizeTerminal(int width, int height, int pixel_width, int pixel_height) { SSH1DataWriter writer = new SSH1DataWriter(); writer.Write(height); writer.Write(width); writer.Write(pixel_width); writer.Write(pixel_height); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_WINDOW_SIZE, writer.ToByteArray()); Transmit(p); }
public void ListenForwardedPort(string allowed_host, int bind_port) { SSH1DataWriter writer = new SSH1DataWriter(); writer.Write(bind_port); writer.Write(allowed_host); writer.Write(0); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_PORT_FORWARD_REQUEST, writer.ToByteArray()); p.WriteTo(_stream, _tCipher); if (_shellID == -1) { ExecShell(); _shellID = RegisterChannelEventReceiver(null, new SSH1DummyReceiver())._localID; } }
/** * transmits channel data */ public void Transmit(byte[] data, int offset, int length) { SSH1DataWriter wr = new SSH1DataWriter(); if(_type==ChannelType.Shell) { wr.WriteAsString(data, offset, length); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_STDIN_DATA, wr.ToByteArray()); Transmit(p); } else { wr.Write(_remoteID); wr.WriteAsString(data, offset, length); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_MSG_CHANNEL_DATA, wr.ToByteArray()); Transmit(p); } }
/** * resizes the size of terminal */ public void ResizeTerminal(int width, int height, int pixel_width, int pixel_height) { SSH1DataWriter writer = new SSH1DataWriter(); writer.Write(height); writer.Write(width); writer.Write(pixel_width); writer.Write(pixel_height); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_WINDOW_SIZE, writer.ToByteArray()); Transmit(p); }
public string DumpHostKeyInKnownHostsStyle() { StringBuilder bld = new StringBuilder(); bld.Append("ssh1 "); SSH1DataWriter wr = new SSH1DataWriter(); //RSA only for SSH1 RSAPublicKey rsa = (RSAPublicKey)_hostkey; wr.Write(rsa.Exponent); wr.Write(rsa.Modulus); byte[] tmpdata = Base64.Encode(wr.ToByteArray()); bld.Append(Encoding.UTF8.GetString(tmpdata, 0 , tmpdata.Length)); return bld.ToString(); }
/** * creates a packet as the input of shell */ static SSH1Packet AsStdinString(byte[] input) { SSH1DataWriter w = new SSH1DataWriter(); w.WriteAsString(input); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_STDIN_DATA, w.ToByteArray()); return(p); }
/** * creates a packet as the input of shell */ static SSH1Packet AsStdinString(byte[] input) { SSH1DataWriter w = new SSH1DataWriter(); w.WriteAsString(input); SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_STDIN_DATA, w.ToByteArray()); return p; }